Plasmonic devices hold promise for a host of metamaterials applications, due to their ability to control light propagation on a subwavelength scale. Noble metal nanomaterials are in some ways ideal components in such devices – they possess tunable, large amplitude plasmon resonances, which can be excited at optical wavelengths. [1]} Nevertheless, metallic plasmonic devices at infrared and visible wavelengths present significant challenges due to bulk plasmon losses. These large losses severely limit the practicality of these materials for a wide variety of applications, particularly in telecommunications and photovoltaics. [2]}
